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Altera_Forum
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7 years ago

Does initiation interval of 1 means no need for unrollment?

I have one basic question. In case of Single-Thread mode kernels, if I have one single loop and I'll be able to achieve initiation interval of one, is it still beneficial to unroll the loop? My assum...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
7 years ago

Thanks for the great response,

I also have one more questions. Consider we have II > 1 in our for-loop in the single thread mode kernel. Now let's say there is still some parallelism opportunity in the code and I would like to move into NDRange mode implementation. As far as I know, in NDRange, multiple threads are being scheduled to the for-loop body instead of loop trips. I know that II in NDRange mode is not specified at compile time and will be determined at runtime. But is there any chance that our ND-Range mode can deliver better II, and as a result better performance?